Improvement in centrifugal evaporators



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WM/:56 www CONRAD WENDEL 'AND WILLIAM FLoRIeH, or snwproninls. y.

IMPROVEMENT IN CENTRIFUGAL EVAPORATRS@ Specication forming part'ot Letters Patent No. l dated January 12,1875; application tiled VDecember 5, 1874.

i To all whom t may concern:

low'conical drum, which is mounted ou a holI low shaft, and the outside jacket of which is perforated with a large number of holes, in combination with a steam-.coil situated beneath a series of conical protectors in such a manner that, by revolving the conical drum, the liquid introduced in the saine is heated and forced out through the holes in the outer jacket of said drum, and thereby the evaporation of saidliquid is effected with rapidity and economy. The liquid which escapes from the conical druin is prevented, by the conical protectors,'froni`j comingV in contact with the heating-coil. With the conical drumand heating-coil is combined a heater,- which receives the exhaust-steam of the heating-coil, and through which the liquid is fed to the conical drum. @he conical drum and the heating-coil are sitiated in a closed veelV sel, on the top of which is placed an exhausti'an,.so as to raref'y` the air in said vessel, for the purpose of promoting the evaporation.

In the drawing, the letter A designates a vessel, through the center of: which rises a shaft, B, the upper part of which is made hollow. y 'On' this hollow part is mounted a` druip, C, which has the form of an inverted .hollow cone, thel outer jacket auf which is foraminous, while its inner jacket, b, is of a different angle from that of theouter jacket, Aso that the hollow'spaee inclosed by said two jackets runs out vtapering towardv its upper end. The foraminous jacket ais lined on its inside with -felt orother suitablev absorbent material, and through the hol1ow"part of the shaft B extends apipe, c, through which'the liquid to beevaporated-is introduced." Gn

the bottoni of the vessel A iss'ituated a steameoil, D, which receives steam through a pipe, d, and from which steam' exhausts through a pipe, c. Said steam-coil is. situ! ated beneath a series of protcctorsfE', which prevent the liquid, in escaping' out-'off the conical drum, from coming idr-contact with the surface cf the coil, whereby said liquid is protected against being scorched. The

`escape-pipe e extends up close to the outside of 'the conical drum, and its side facingsaidA drum is perforated with a number vofv small holes, so that the steam issuing from said holes will keep the lining of the conical drum soft, and in proper working order.- zhaid pipe e connects with a heater, F, through which runs the liquid-supplylpipe c, -so that the temperature of the liquid is Vraised nearly to the boiling-point before it reaches the' evaporating-drhin.

As thedruln G is revolved, the liquid con tained therein i'sforced out in small jets through the holes in the jacket a, and as it, escapes into the heated atmosphere in the' vessel-A the volatile portions of the sameV are evaporated, and the heavy constituents drop down and collect on the bottom of said vessel, whence the same are AKdrawn outcby a suitable gate or faucet, Sv. The vessel A is covered with a closely-tting lid,Gr, and-en thelid is secured an exhaust fan, H,`1whi ch serves to rarey the air in the vessel', for the purpose of promoting 'the evaporating' process.' This exhaust-fan also serves to ia-4 cllitate the removal of steam, which escapes through the holes in the tail-pipe e, and which otherwise would accumulate 4in the vessel A, whereby' the evaporation of the liquid would be materially retarded.

What we claim asncugand desire to secure by Letters Patent, is i 1. Thcconical drum C, mounted on a hollow shaft, B, in combination with the vessel A and coil l), substantially as set forth.

2 The combination o f the heater F with,l the conical drum C, hollow shaftfB, vessel A,

coil D, and pipe e, substantially as shown and described.

I The 'perforated il-pipe c of the coil D, In testimony that We claim the .foregoing in combination' with the conioai drum C, vewe have hereunto 'set our hands and seals this ,mi A, and coil D, substantially as described. 1st dav of December, 1874.

4. The protector E, in combination with the conical drum C, vessel A, and coil D, sul CONRAD WENDEL.. {han} stautialy n.9 described. WILLIAM FLORICH' L' s' l 5. The exhaust-fan E, in combination with l Witnesses:

the closed vessel A; drum, and steam-coil WLHAUEF, i

@A nbsintally as se@ forth. E. F. TENHUBER. A 

